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emphasize that fixnums can be compared with eq? (#2562)

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Matthew Butterick 2019-03-27 07:22:16 -07:00 committed by Matthew Flatt
parent db677018d0
commit 16a6542735
1 changed files with 6 additions and 1 deletions
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7
pkgs/racket-doc/scribblings/reference/booleans.scrbl
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@ -55,6 +55,7 @@ values would be equal. See also @racket[gen:equal+hash] and @racket[prop:imperso
@examples[
(equal? 'yes 'yes)
(equal? 'yes 'no)
(equal? (* 6 7) 42)
(equal? (expt 2 100) (expt 2 100))
(equal? 2 2.0)
(let ([v (mcons 1 2)]) (equal? v v))
@ -82,6 +83,7 @@ in the case of @tech{complex numbers}. Two characters are
@examples[
(eqv? 'yes 'yes)
(eqv? 'yes 'no)
(eqv? (* 6 7) 42)
(eqv? (expt 2 100) (expt 2 100))
(eqv? 2 2.0)
(let ([v (mcons 1 2)]) (eqv? v v))
@ -95,11 +97,14 @@ in the case of @tech{complex numbers}. Two characters are
@defproc[(eq? [v1 any/c] [v2 any/c]) boolean?]{
Return @racket[#t] if @racket[v1] and @racket[v2] refer to the same
object, @racket[#f] otherwise. See also @secref["model-eq"].
object, @racket[#f] otherwise. As a special case among @tech{numbers},
two @tech{fixnums} that are @racket[=] are also the same according
to @racket[eq?]. See also @secref["model-eq"].
@examples[
(eq? 'yes 'yes)
(eq? 'yes 'no)
(eq? (* 6 7) 42)
(eq? (expt 2 100) (expt 2 100))
(eq? 2 2.0)
(let ([v (mcons 1 2)]) (eq? v v))